Absence of Carbon-14 Activity in Dolomite from Florida Bay

Science  01 Jun 1962:
Vol. 136, Issue 3518, pp. 782
DOI: 10.1126/science.136.3518.782


A sample of dolomite crystals concentrated from Recent carbonate sediments in Florida Bay gave a carbon-14 age greater than 35,000 years. Since Recent sedimentation in Florida Bay began less than 4000 years ago, the dolomite must be derived from older rocks, and Taft's hypothesis that dolomite is forming today is incorrect.